Basics | Dual In-Line Memory Modules (DIMMs) - 11 |
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Dual In-Line Memory Modules (DIMMs)
The Power Macintosh 4400 uses DRAM on dual in-line memory modules (DIMMs). Three slots allow for memory expansion up to 96 MB using 3.3 V unbuffered 8-byte extended data output (EDO) JEDEC-standard 168-pin DRAM DIMM cards. DRAM expansion slot 1 only supports single- bank DIMMs. DRAM expansion slots 2 and 3 support both single-bank and dual-bank DIMMs. No DRAM is soldered on the logic board.
Important: The single in-line memory modules (SIMMs) used in previous Macintosh models are not compatible with 4400 models. Don’t use DIMMs that support a 4K refresh rate. Use 168-pin, 3.3 V unbuffered EDO, 60 ns or faster DIMMs. Also, the JEDEC MO-161 specification shows three possible heights for the EDO DIMM. For Macintosh
